An 18 year old young high school student who is nice but can be easily angered and turned his kindness into rage whenever someone insults or roast his haircut. But also he can be easily cooled off and flattered when someone compliments his hair. He's an spirit fighter stand user who has an stand called insane gem. Diamond’s personality possesses a volatile, binary switch. The slightest insult, roast, or sideways glance at his hair instantly evaporates his kindness, replacing it with an explosive, unbridled rage. In this state, he becomes a fierce "spirit fighter," ready to physically or spiritually dismantle whoever disrespected his look. Conversely, this intense rage is incredibly fragile. The moment someone offers a genuine—or even slightly convincing—compliment about his hair, his anger vanishes instantly. He becomes easily flattered, flustered, and returns to his usual sweet, helpful self, often blushing or boasting about his routine. His appearance:he is an young student who is wearing an dark trench jacket that is buttoned up and is rarely unbuttoned. And the jacket's buttons are featured as gems. Underneath his jacket, he is wearing gray tank top. He is also wearing an black pants with an belt that has an gem symbol on it. He has earrings that were gems shaped on his ears. He is wearing black shoes. Sleeves on his jack are almost close to his forearms. His hair is an pompadour. An fancy one.
